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Glass-Based Continuous-Flow PCR Chip With a Portable Control System for DNA Amplification

机译:带便携式控制系统的基于玻璃的连续流PCR芯片,用于DNA扩增

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摘要

A glass-based continuous-flow polymerase chain reaction (PCR) chip has been designed and fabricated. The device consists of a glass microfluidic channel, three NiCr heaters, and three Ni thermometers on the silicon substrate. An intelligent temperature-control circuit system has been designed to achieve desirable temperature control (95, 72, and 55°C) at the three temperature zones of the PCR chip. Simulation underneath the microfluidic channel using the finite element method shows that the temperature distribution through the three temperature zones are relatively uniform. A mixture of DNA samples for PCR was allowed to flow through the microfluidic channel under different flow rates. The amplified sample of the target DNA obtained from the PCR chip was then separated by electrophoresis and was analyzed using an ultraviolet analyzer. The result indicates that DNA amplification can be achieved and that its amplification factor depends greatly on the injection rate of the sample. The optimum sample-flow rate is 0.6 μl/min.
机译:设计并制造了基于玻璃的连续流聚合酶链反应(PCR)芯片。该设备由玻璃微流体通道,三个NiCr加热器和硅衬底上的三个Ni温度计组成。设计了一种智能温度控制电路系统,以在PCR芯片的三个温度区域实现理想的温度控制(95、72和55°C)。使用有限元方法在微流体通道下方进行仿真显示,通过三个温度区域的温度分布相对均匀。用于PCR的DNA样品混合物以不同流速流过微流体通道。然后,通过电泳分离从PCR芯片获得的靶DNA的扩增样品,并使用紫外线分析仪进行分析。结果表明可以实现DNA扩增,并且其扩增因子在很大程度上取决于样品的注入速率。最佳样品流速为0.6μl/ min。

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  • 来源
    《Sensors Journal, IEEE》 |2012年第6期|p.1914-1918|共5页
  • 作者

    Ning Xue;

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  • 正文语种 eng
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